From 1eb208aea3179dd2fc0cdeea45ef869d75b4fe70 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 11 Feb 2011 00:06:30 +0100 Subject: PM: Make CONFIG_PM depend on (CONFIG_PM_SLEEP || CONFIG_PM_RUNTIME) From the users' point of view CONFIG_PM is really only used for making it possible to set CONFIG_SUSPEND, CONFIG_HIBERNATION, CONFIG_PM_RUNTIME and (surprisingly enough) CONFIG_XEN_SAVE_RESTORE (CONFIG_PM_OPP also depends on CONFIG_PM, but quite artificially). However, both CONFIG_SUSPEND and CONFIG_HIBERNATION require platform support (independent of CONFIG_PM) and it is not quite obvious that CONFIG_PM has to be set for CONFIG_XEN_SAVE_RESTORE to be available. Thus, from the users' point of view, it would be more logical to automatically select CONFIG_PM if any of the above options depending on it are set. Make CONFIG_PM depend on (CONFIG_PM_SLEEP || CONFIG_PM_RUNTIME), which will cause it to be selected when any of CONFIG_SUSPEND, CONFIG_HIBERNATION, CONFIG_PM_RUNTIME, CONFIG_XEN_SAVE_RESTORE is set and will clarify its meaning. Signed-off-by: Rafael J. Wysocki --- kernel/power/Kconfig | 29 ++++++----------------------- 1 file changed, 6 insertions(+), 23 deletions(-) (limited to 'kernel') diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig index 2657299..d739cf6 100644 --- a/kernel/power/Kconfig +++ b/kernel/power/Kconfig @@ -1,23 +1,7 @@ config PM - bool "Power Management support" - depends on !IA64_HP_SIM - ---help--- - "Power Management" means that parts of your computer are shut - off or put into a power conserving "sleep" mode if they are not - being used. There are two competing standards for doing this: APM - and ACPI. If you want to use either one, say Y here and then also - to the requisite support below. - - Power Management is most important for battery powered laptop - computers; if you have a laptop, check out the Linux Laptop home - page on the WWW at or - Tuxmobil - Linux on Mobile Computers at - and the Battery Powered Linux mini-HOWTO, available from - . - - Note that, even if you say N here, Linux on the x86 architecture - will issue the hlt instruction if nothing is to be done, thereby - sending the processor to sleep and saving power. + bool + depends on PM_SLEEP || PM_RUNTIME + default y config PM_DEBUG bool "Power Management Debug Support" @@ -102,7 +86,7 @@ config PM_SLEEP_ADVANCED_DEBUG config SUSPEND bool "Suspend to RAM and standby" - depends on PM && ARCH_SUSPEND_POSSIBLE + depends on ARCH_SUSPEND_POSSIBLE default y ---help--- Allow the system to enter sleep states in which main memory is @@ -133,7 +117,7 @@ config SUSPEND_FREEZER config HIBERNATION bool "Hibernation (aka 'suspend to disk')" - depends on PM && SWAP && ARCH_HIBERNATION_POSSIBLE + depends on SWAP && ARCH_HIBERNATION_POSSIBLE select LZO_COMPRESS select LZO_DECOMPRESS ---help--- @@ -224,7 +208,7 @@ config APM_EMULATION config PM_RUNTIME bool "Run-time PM core functionality" - depends on PM + depends on !IA64_HP_SIM ---help--- Enable functionality allowing I/O devices to be put into energy-saving (low power) states at run time (or autosuspended) after a specified @@ -246,7 +230,6 @@ config ARCH_HAS_OPP config PM_OPP bool "Operating Performance Point (OPP) Layer library" - depends on PM depends on ARCH_HAS_OPP ---help--- SOCs have a standard set of tuples consisting of frequency and -- cgit v1.1